git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/aic7xxx/aic7xxx_pci.c

   1 /*
   2  * Product specific probe and attach routines for:
   3  *      3940, 2940, aic7895, aic7890, aic7880,
   4  *      aic7870, aic7860 and aic7850 SCSI controllers
   5  *
   6  * Copyright (c) 1994-2001 Justin T. Gibbs.
   7  * Copyright (c) 2000-2001 Adaptec Inc.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions, and the following disclaimer,
  15  *    without modification.
  16  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  17  *    substantially similar to the "NO WARRANTY" disclaimer below
  18  *    ("Disclaimer") and any redistribution must be conditioned upon
  19  *    including a substantially similar Disclaimer requirement for further
  20  *    binary redistribution.
  21  * 3. Neither the names of the above-listed copyright holders nor the names
  22  *    of any contributors may be used to endorse or promote products derived
  23  *    from this software without specific prior written permission.
  24  *
  25  * Alternatively, this software may be distributed under the terms of the
  26  * GNU General Public License ("GPL") version 2 as published by the Free
  27  * Software Foundation.
  28  *
  29  * NO WARRANTY
  30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  31  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  32  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  33  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  34  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  38  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  39  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  40  * POSSIBILITY OF SUCH DAMAGES.
  41  *
  42  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_pci.c#79 $
  43  */
  44
  45 #ifdef __linux__
  46 #include "aic7xxx_osm.h"
  47 #include "aic7xxx_inline.h"
  48 #include "aic7xxx_93cx6.h"
  49 #else
  50 #include <dev/aic7xxx/aic7xxx_osm.h>
  51 #include <dev/aic7xxx/aic7xxx_inline.h>
  52 #include <dev/aic7xxx/aic7xxx_93cx6.h>
  53 #endif
  54
  55 #include "aic7xxx_pci.h"
  56
  57 static __inline uint64_t
  58 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
  59 {
  60         uint64_t id;
  61
  62         id = subvendor
  63            | (subdevice << 16)
  64            | ((uint64_t)vendor << 32)
  65            | ((uint64_t)device << 48);
  66
  67         return (id);
  68 }
  69
  70 #define AHC_PCI_IOADDR  PCIR_MAPS       /* I/O Address */
  71 #define AHC_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */
  72
  73 #define DEVID_9005_TYPE(id) ((id) & 0xF)
  74 #define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
  75 #define         DEVID_9005_TYPE_AAA             0x3     /* RAID Card */
  76 #define         DEVID_9005_TYPE_SISL            0x5     /* Container ROMB */
  77 #define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
  78
  79 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
  80 #define         DEVID_9005_MAXRATE_U160         0x0
  81 #define         DEVID_9005_MAXRATE_ULTRA2       0x1
  82 #define         DEVID_9005_MAXRATE_ULTRA        0x2
  83 #define         DEVID_9005_MAXRATE_FAST         0x3
  84
  85 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
  86
  87 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
  88 #define         DEVID_9005_CLASS_SPI            0x0     /* Parallel SCSI */
  89
  90 #define SUBID_9005_TYPE(id) ((id) & 0xF)
  91 #define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
  92 #define         SUBID_9005_TYPE_CARD            0x0     /* Standard Card */
  93 #define         SUBID_9005_TYPE_LCCARD          0x1     /* Low Cost Card */
  94 #define         SUBID_9005_TYPE_RAID            0x3     /* Combined with Raid */
  95
  96 #define SUBID_9005_TYPE_KNOWN(id)                       \
  97           ((((id) & 0xF) == SUBID_9005_TYPE_MB)         \
  98         || (((id) & 0xF) == SUBID_9005_TYPE_CARD)       \
  99         || (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)     \
 100         || (((id) & 0xF) == SUBID_9005_TYPE_RAID))
 101
 102 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
 103 #define         SUBID_9005_MAXRATE_ULTRA2       0x0
 104 #define         SUBID_9005_MAXRATE_ULTRA        0x1
 105 #define         SUBID_9005_MAXRATE_U160         0x2
 106 #define         SUBID_9005_MAXRATE_RESERVED     0x3
 107
 108 #define SUBID_9005_SEEPTYPE(id)                                         \
 109         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
 110          ? ((id) & 0xC0) >> 6                                           \
 111          : ((id) & 0x300) >> 8)
 112 #define         SUBID_9005_SEEPTYPE_NONE        0x0
 113 #define         SUBID_9005_SEEPTYPE_1K          0x1
 114 #define         SUBID_9005_SEEPTYPE_2K_4K       0x2
 115 #define         SUBID_9005_SEEPTYPE_RESERVED    0x3
 116 #define SUBID_9005_AUTOTERM(id)                                         \
 117         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
 118          ? (((id) & 0x400) >> 10) == 0                                  \
 119          : (((id) & 0x40) >> 6) == 0)
 120
 121 #define SUBID_9005_NUMCHAN(id)                                          \
 122         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
 123          ? ((id) & 0x300) >> 8                                          \
 124          : ((id) & 0xC00) >> 10)
 125
 126 #define SUBID_9005_LEGACYCONN(id)                                       \
 127         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
 128          ? 0                                                            \
 129          : ((id) & 0x80) >> 7)
 130
 131 #define SUBID_9005_MFUNCENB(id)                                         \
 132         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
 133          ? ((id) & 0x800) >> 11                                         \
 134          : ((id) & 0x1000) >> 12)
 135 /*
 136  * Informational only. Should use chip register to be
 137  * certain, but may be use in identification strings.
 138  */
 139 #define SUBID_9005_CARD_SCSIWIDTH_MASK  0x2000
 140 #define SUBID_9005_CARD_PCIWIDTH_MASK   0x4000
 141 #define SUBID_9005_CARD_SEDIFF_MASK     0x8000
 142
 143 static ahc_device_setup_t ahc_aic785X_setup;
 144 static ahc_device_setup_t ahc_aic7860_setup;
 145 static ahc_device_setup_t ahc_apa1480_setup;
 146 static ahc_device_setup_t ahc_aic7870_setup;
 147 static ahc_device_setup_t ahc_aic7870h_setup;
 148 static ahc_device_setup_t ahc_aha394X_setup;
 149 static ahc_device_setup_t ahc_aha394Xh_setup;
 150 static ahc_device_setup_t ahc_aha494X_setup;
 151 static ahc_device_setup_t ahc_aha494Xh_setup;
 152 static ahc_device_setup_t ahc_aha398X_setup;
 153 static ahc_device_setup_t ahc_aic7880_setup;
 154 static ahc_device_setup_t ahc_aic7880h_setup;
 155 static ahc_device_setup_t ahc_aha2940Pro_setup;
 156 static ahc_device_setup_t ahc_aha394XU_setup;
 157 static ahc_device_setup_t ahc_aha394XUh_setup;
 158 static ahc_device_setup_t ahc_aha398XU_setup;
 159 static ahc_device_setup_t ahc_aic7890_setup;
 160 static ahc_device_setup_t ahc_aic7892_setup;
 161 static ahc_device_setup_t ahc_aic7895_setup;
 162 static ahc_device_setup_t ahc_aic7895h_setup;
 163 static ahc_device_setup_t ahc_aic7896_setup;
 164 static ahc_device_setup_t ahc_aic7899_setup;
 165 static ahc_device_setup_t ahc_aha29160C_setup;
 166 static ahc_device_setup_t ahc_raid_setup;
 167 static ahc_device_setup_t ahc_aha394XX_setup;
 168 static ahc_device_setup_t ahc_aha494XX_setup;
 169 static ahc_device_setup_t ahc_aha398XX_setup;
 170
 171 static const struct ahc_pci_identity ahc_pci_ident_table[] = {
 172         /* aic7850 based controllers */
 173         {
 174                 ID_AHA_2902_04_10_15_20C_30C,
 175                 ID_ALL_MASK,
 176                 "Adaptec 2902/04/10/15/20C/30C SCSI adapter",
 177                 ahc_aic785X_setup
 178         },
 179         /* aic7860 based controllers */
 180         {
 181                 ID_AHA_2930CU,
 182                 ID_ALL_MASK,
 183                 "Adaptec 2930CU SCSI adapter",
 184                 ahc_aic7860_setup
 185         },
 186         {
 187                 ID_AHA_1480A & ID_DEV_VENDOR_MASK,
 188                 ID_DEV_VENDOR_MASK,
 189                 "Adaptec 1480A Ultra SCSI adapter",
 190                 ahc_apa1480_setup
 191         },
 192         {
 193                 ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
 194                 ID_DEV_VENDOR_MASK,
 195                 "Adaptec 2940A Ultra SCSI adapter",
 196                 ahc_aic7860_setup
 197         },
 198         {
 199                 ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
 200                 ID_DEV_VENDOR_MASK,
 201                 "Adaptec 2940A/CN Ultra SCSI adapter",
 202                 ahc_aic7860_setup
 203         },
 204         {
 205                 ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
 206                 ID_DEV_VENDOR_MASK,
 207                 "Adaptec 2930C Ultra SCSI adapter (VAR)",
 208                 ahc_aic7860_setup
 209         },
 210         /* aic7870 based controllers */
 211         {
 212                 ID_AHA_2940,
 213                 ID_ALL_MASK,
 214                 "Adaptec 2940 SCSI adapter",
 215                 ahc_aic7870_setup
 216         },
 217         {
 218                 ID_AHA_3940,
 219                 ID_ALL_MASK,
 220                 "Adaptec 3940 SCSI adapter",
 221                 ahc_aha394X_setup
 222         },
 223         {
 224                 ID_AHA_398X,
 225                 ID_ALL_MASK,
 226                 "Adaptec 398X SCSI RAID adapter",
 227                 ahc_aha398X_setup
 228         },
 229         {
 230                 ID_AHA_2944,
 231                 ID_ALL_MASK,
 232                 "Adaptec 2944 SCSI adapter",
 233                 ahc_aic7870h_setup
 234         },
 235         {
 236                 ID_AHA_3944,
 237                 ID_ALL_MASK,
 238                 "Adaptec 3944 SCSI adapter",
 239                 ahc_aha394Xh_setup
 240         },
 241         {
 242                 ID_AHA_4944,
 243                 ID_ALL_MASK,
 244                 "Adaptec 4944 SCSI adapter",
 245                 ahc_aha494Xh_setup
 246         },
 247         /* aic7880 based controllers */
 248         {
 249                 ID_AHA_2940U & ID_DEV_VENDOR_MASK,
 250                 ID_DEV_VENDOR_MASK,
 251                 "Adaptec 2940 Ultra SCSI adapter",
 252                 ahc_aic7880_setup
 253         },
 254         {
 255                 ID_AHA_3940U & ID_DEV_VENDOR_MASK,
 256                 ID_DEV_VENDOR_MASK,
 257                 "Adaptec 3940 Ultra SCSI adapter",
 258                 ahc_aha394XU_setup
 259         },
 260         {
 261                 ID_AHA_2944U & ID_DEV_VENDOR_MASK,
 262                 ID_DEV_VENDOR_MASK,
 263                 "Adaptec 2944 Ultra SCSI adapter",
 264                 ahc_aic7880h_setup
 265         },
 266         {
 267                 ID_AHA_3944U & ID_DEV_VENDOR_MASK,
 268                 ID_DEV_VENDOR_MASK,
 269                 "Adaptec 3944 Ultra SCSI adapter",
 270                 ahc_aha394XUh_setup
 271         },
 272         {
 273                 ID_AHA_398XU & ID_DEV_VENDOR_MASK,
 274                 ID_DEV_VENDOR_MASK,
 275                 "Adaptec 398X Ultra SCSI RAID adapter",
 276                 ahc_aha398XU_setup
 277         },
 278         {
 279                 /*
 280                  * XXX Don't know the slot numbers
 281                  * so we can't identify channels
 282                  */
 283                 ID_AHA_4944U & ID_DEV_VENDOR_MASK,
 284                 ID_DEV_VENDOR_MASK,
 285                 "Adaptec 4944 Ultra SCSI adapter",
 286                 ahc_aic7880h_setup
 287         },
 288         {
 289                 ID_AHA_2930U & ID_DEV_VENDOR_MASK,
 290                 ID_DEV_VENDOR_MASK,
 291                 "Adaptec 2930 Ultra SCSI adapter",
 292                 ahc_aic7880_setup
 293         },
 294         {
 295                 ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
 296                 ID_DEV_VENDOR_MASK,
 297                 "Adaptec 2940 Pro Ultra SCSI adapter",
 298                 ahc_aha2940Pro_setup
 299         },
 300         {
 301                 ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
 302                 ID_DEV_VENDOR_MASK,
 303                 "Adaptec 2940/CN Ultra SCSI adapter",
 304                 ahc_aic7880_setup
 305         },
 306         /* Ignore all SISL (AAC on MB) based controllers. */
 307         {
 308                 ID_9005_SISL_ID,
 309                 ID_9005_SISL_MASK,
 310                 NULL,
 311                 NULL
 312         },
 313         /* aic7890 based controllers */
 314         {
 315                 ID_AHA_2930U2,
 316                 ID_ALL_MASK,
 317                 "Adaptec 2930 Ultra2 SCSI adapter",
 318                 ahc_aic7890_setup
 319         },
 320         {
 321                 ID_AHA_2940U2B,
 322                 ID_ALL_MASK,
 323                 "Adaptec 2940B Ultra2 SCSI adapter",
 324                 ahc_aic7890_setup
 325         },
 326         {
 327                 ID_AHA_2940U2_OEM,
 328                 ID_ALL_MASK,
 329                 "Adaptec 2940 Ultra2 SCSI adapter (OEM)",
 330                 ahc_aic7890_setup
 331         },
 332         {
 333                 ID_AHA_2940U2,
 334                 ID_ALL_MASK,
 335                 "Adaptec 2940 Ultra2 SCSI adapter",
 336                 ahc_aic7890_setup
 337         },
 338         {
 339                 ID_AHA_2950U2B,
 340                 ID_ALL_MASK,
 341                 "Adaptec 2950 Ultra2 SCSI adapter",
 342                 ahc_aic7890_setup
 343         },
 344         {
 345                 ID_AIC7890_ARO,
 346                 ID_ALL_MASK,
 347                 "Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
 348                 ahc_aic7890_setup
 349         },
 350         {
 351                 ID_AAA_131U2,
 352                 ID_ALL_MASK,
 353                 "Adaptec AAA-131 Ultra2 RAID adapter",
 354                 ahc_aic7890_setup
 355         },
 356         /* aic7892 based controllers */
 357         {
 358                 ID_AHA_29160,
 359                 ID_ALL_MASK,
 360                 "Adaptec 29160 Ultra160 SCSI adapter",
 361                 ahc_aic7892_setup
 362         },
 363         {
 364                 ID_AHA_29160_CPQ,
 365                 ID_ALL_MASK,
 366                 "Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
 367                 ahc_aic7892_setup
 368         },
 369         {
 370                 ID_AHA_29160N,
 371                 ID_ALL_MASK,
 372                 "Adaptec 29160N Ultra160 SCSI adapter",
 373                 ahc_aic7892_setup
 374         },
 375         {
 376                 ID_AHA_29160C,
 377                 ID_ALL_MASK,
 378                 "Adaptec 29160C Ultra160 SCSI adapter",
 379                 ahc_aha29160C_setup
 380         },
 381         {
 382                 ID_AHA_29160B,
 383                 ID_ALL_MASK,
 384                 "Adaptec 29160B Ultra160 SCSI adapter",
 385                 ahc_aic7892_setup
 386         },
 387         {
 388                 ID_AHA_19160B,
 389                 ID_ALL_MASK,
 390                 "Adaptec 19160B Ultra160 SCSI adapter",
 391                 ahc_aic7892_setup
 392         },
 393         {
 394                 ID_AIC7892_ARO,
 395                 ID_ALL_MASK,
 396                 "Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
 397                 ahc_aic7892_setup
 398         },
 399         {
 400                 ID_AHA_2915_30LP,
 401                 ID_ALL_MASK,
 402                 "Adaptec 2915/30LP Ultra160 SCSI adapter",
 403                 ahc_aic7892_setup
 404         },
 405         /* aic7895 based controllers */
 406         {
 407                 ID_AHA_2940U_DUAL,
 408                 ID_ALL_MASK,
 409                 "Adaptec 2940/DUAL Ultra SCSI adapter",
 410                 ahc_aic7895_setup
 411         },
 412         {
 413                 ID_AHA_3940AU,
 414                 ID_ALL_MASK,
 415                 "Adaptec 3940A Ultra SCSI adapter",
 416                 ahc_aic7895_setup
 417         },
 418         {
 419                 ID_AHA_3944AU,
 420                 ID_ALL_MASK,
 421                 "Adaptec 3944A Ultra SCSI adapter",
 422                 ahc_aic7895h_setup
 423         },
 424         {
 425                 ID_AIC7895_ARO,
 426                 ID_AIC7895_ARO_MASK,
 427                 "Adaptec aic7895 Ultra SCSI adapter (ARO)",
 428                 ahc_aic7895_setup
 429         },
 430         /* aic7896/97 based controllers */
 431         {
 432                 ID_AHA_3950U2B_0,
 433                 ID_ALL_MASK,
 434                 "Adaptec 3950B Ultra2 SCSI adapter",
 435                 ahc_aic7896_setup
 436         },
 437         {
 438                 ID_AHA_3950U2B_1,
 439                 ID_ALL_MASK,
 440                 "Adaptec 3950B Ultra2 SCSI adapter",
 441                 ahc_aic7896_setup
 442         },
 443         {
 444                 ID_AHA_3950U2D_0,
 445                 ID_ALL_MASK,
 446                 "Adaptec 3950D Ultra2 SCSI adapter",
 447                 ahc_aic7896_setup
 448         },
 449         {
 450                 ID_AHA_3950U2D_1,
 451                 ID_ALL_MASK,
 452                 "Adaptec 3950D Ultra2 SCSI adapter",
 453                 ahc_aic7896_setup
 454         },
 455         {
 456                 ID_AIC7896_ARO,
 457                 ID_ALL_MASK,
 458                 "Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
 459                 ahc_aic7896_setup
 460         },
 461         /* aic7899 based controllers */
 462         {
 463                 ID_AHA_3960D,
 464                 ID_ALL_MASK,
 465                 "Adaptec 3960D Ultra160 SCSI adapter",
 466                 ahc_aic7899_setup
 467         },
 468         {
 469                 ID_AHA_3960D_CPQ,
 470                 ID_ALL_MASK,
 471                 "Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
 472                 ahc_aic7899_setup
 473         },
 474         {
 475                 ID_AIC7899_ARO,
 476                 ID_ALL_MASK,
 477                 "Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
 478                 ahc_aic7899_setup
 479         },
 480         /* Generic chip probes for devices we don't know 'exactly' */
 481         {
 482                 ID_AIC7850 & ID_DEV_VENDOR_MASK,
 483                 ID_DEV_VENDOR_MASK,
 484                 "Adaptec aic7850 SCSI adapter",
 485                 ahc_aic785X_setup
 486         },
 487         {
 488                 ID_AIC7855 & ID_DEV_VENDOR_MASK,
 489                 ID_DEV_VENDOR_MASK,
 490                 "Adaptec aic7855 SCSI adapter",
 491                 ahc_aic785X_setup
 492         },
 493         {
 494                 ID_AIC7859 & ID_DEV_VENDOR_MASK,
 495                 ID_DEV_VENDOR_MASK,
 496                 "Adaptec aic7859 SCSI adapter",
 497                 ahc_aic7860_setup
 498         },
 499         {
 500                 ID_AIC7860 & ID_DEV_VENDOR_MASK,
 501                 ID_DEV_VENDOR_MASK,
 502                 "Adaptec aic7860 Ultra SCSI adapter",
 503                 ahc_aic7860_setup
 504         },
 505         {
 506                 ID_AIC7870 & ID_DEV_VENDOR_MASK,
 507                 ID_DEV_VENDOR_MASK,
 508                 "Adaptec aic7870 SCSI adapter",
 509                 ahc_aic7870_setup
 510         },
 511         {
 512                 ID_AIC7880 & ID_DEV_VENDOR_MASK,
 513                 ID_DEV_VENDOR_MASK,
 514                 "Adaptec aic7880 Ultra SCSI adapter",
 515                 ahc_aic7880_setup
 516         },
 517         {
 518                 ID_AIC7890 & ID_9005_GENERIC_MASK,
 519                 ID_9005_GENERIC_MASK,
 520                 "Adaptec aic7890/91 Ultra2 SCSI adapter",
 521                 ahc_aic7890_setup
 522         },
 523         {
 524                 ID_AIC7892 & ID_9005_GENERIC_MASK,
 525                 ID_9005_GENERIC_MASK,
 526                 "Adaptec aic7892 Ultra160 SCSI adapter",
 527                 ahc_aic7892_setup
 528         },
 529         {
 530                 ID_AIC7895 & ID_DEV_VENDOR_MASK,
 531                 ID_DEV_VENDOR_MASK,
 532                 "Adaptec aic7895 Ultra SCSI adapter",
 533                 ahc_aic7895_setup
 534         },
 535         {
 536                 ID_AIC7896 & ID_9005_GENERIC_MASK,
 537                 ID_9005_GENERIC_MASK,
 538                 "Adaptec aic7896/97 Ultra2 SCSI adapter",
 539                 ahc_aic7896_setup
 540         },
 541         {
 542                 ID_AIC7899 & ID_9005_GENERIC_MASK,
 543                 ID_9005_GENERIC_MASK,
 544                 "Adaptec aic7899 Ultra160 SCSI adapter",
 545                 ahc_aic7899_setup
 546         },
 547         {
 548                 ID_AIC7810 & ID_DEV_VENDOR_MASK,
 549                 ID_DEV_VENDOR_MASK,
 550                 "Adaptec aic7810 RAID memory controller",
 551                 ahc_raid_setup
 552         },
 553         {
 554                 ID_AIC7815 & ID_DEV_VENDOR_MASK,
 555                 ID_DEV_VENDOR_MASK,
 556                 "Adaptec aic7815 RAID memory controller",
 557                 ahc_raid_setup
 558         }
 559 };
 560
 561 static const u_int ahc_num_pci_devs = ARRAY_SIZE(ahc_pci_ident_table);
 562
 563 #define AHC_394X_SLOT_CHANNEL_A 4
 564 #define AHC_394X_SLOT_CHANNEL_B 5
 565
 566 #define AHC_398X_SLOT_CHANNEL_A 4
 567 #define AHC_398X_SLOT_CHANNEL_B 8
 568 #define AHC_398X_SLOT_CHANNEL_C 12
 569
 570 #define AHC_494X_SLOT_CHANNEL_A 4
 571 #define AHC_494X_SLOT_CHANNEL_B 5
 572 #define AHC_494X_SLOT_CHANNEL_C 6
 573 #define AHC_494X_SLOT_CHANNEL_D 7
 574
 575 #define DEVCONFIG               0x40
 576 #define         PCIERRGENDIS    0x80000000ul
 577 #define         SCBSIZE32       0x00010000ul    /* aic789X only */
 578 #define         REXTVALID       0x00001000ul    /* ultra cards only */
 579 #define         MPORTMODE       0x00000400ul    /* aic7870+ only */
 580 #define         RAMPSM          0x00000200ul    /* aic7870+ only */
 581 #define         VOLSENSE        0x00000100ul
 582 #define         PCI64BIT        0x00000080ul    /* 64Bit PCI bus (Ultra2 Only)*/
 583 #define         SCBRAMSEL       0x00000080ul
 584 #define         MRDCEN          0x00000040ul
 585 #define         EXTSCBTIME      0x00000020ul    /* aic7870 only */
 586 #define         EXTSCBPEN       0x00000010ul    /* aic7870 only */
 587 #define         BERREN          0x00000008ul
 588 #define         DACEN           0x00000004ul
 589 #define         STPWLEVEL       0x00000002ul
 590 #define         DIFACTNEGEN     0x00000001ul    /* aic7870 only */
 591
 592 #define CSIZE_LATTIME           0x0c
 593 #define         CACHESIZE       0x0000003ful    /* only 5 bits */
 594 #define         LATTIME         0x0000ff00ul
 595
 596 /* PCI STATUS definitions */
 597 #define DPE     0x80
 598 #define SSE     0x40
 599 #define RMA     0x20
 600 #define RTA     0x10
 601 #define STA     0x08
 602 #define DPR     0x01
 603
 604 static int ahc_9005_subdevinfo_valid(uint16_t vendor, uint16_t device,
 605                                      uint16_t subvendor, uint16_t subdevice);
 606 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
 607 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
 608                                   int pcheck, int fast, int large);
 609 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
 610 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
 611 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
 612                                  struct seeprom_config *sc);
 613 static void configure_termination(struct ahc_softc *ahc,
 614                                   struct seeprom_descriptor *sd,
 615                                   u_int adapter_control,
 616                                   u_int *sxfrctl1);
 617
 618 static void ahc_new_term_detect(struct ahc_softc *ahc,
 619                                 int *enableSEC_low,
 620                                 int *enableSEC_high,
 621                                 int *enablePRI_low,
 622                                 int *enablePRI_high,
 623                                 int *eeprom_present);
 624 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 625                                  int *internal68_present,
 626                                  int *externalcable_present,
 627                                  int *eeprom_present);
 628 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
 629                                  int *externalcable_present,
 630                                  int *eeprom_present);
 631 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
 632 static uint8_t read_brdctl(struct ahc_softc *ahc);
 633 static void ahc_pci_intr(struct ahc_softc *ahc);
 634 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
 635
 636 static int
 637 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
 638                           uint16_t subdevice, uint16_t subvendor)
 639 {
 640         int result;
 641
 642         /* Default to invalid. */
 643         result = 0;
 644         if (vendor == 0x9005
 645          && subvendor == 0x9005
 646          && subdevice != device
 647          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
 648
 649                 switch (SUBID_9005_TYPE(subdevice)) {
 650                 case SUBID_9005_TYPE_MB:
 651                         break;
 652                 case SUBID_9005_TYPE_CARD:
 653                 case SUBID_9005_TYPE_LCCARD:
 654                         /*
 655                          * Currently only trust Adaptec cards to
 656                          * get the sub device info correct.
 657                          */
 658                         if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
 659                                 result = 1;
 660                         break;
 661                 case SUBID_9005_TYPE_RAID:
 662                         break;
 663                 default:
 664                         break;
 665                 }
 666         }
 667         return (result);
 668 }
 669
 670 const struct ahc_pci_identity *
 671 ahc_find_pci_device(ahc_dev_softc_t pci)
 672 {
 673         uint64_t  full_id;
 674         uint16_t  device;
 675         uint16_t  vendor;
 676         uint16_t  subdevice;
 677         uint16_t  subvendor;
 678         const struct ahc_pci_identity *entry;
 679         u_int     i;
 680
 681         vendor = ahc_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
 682         device = ahc_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
 683         subvendor = ahc_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
 684         subdevice = ahc_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
 685         full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
 686
 687         /*
 688          * If the second function is not hooked up, ignore it.
 689          * Unfortunately, not all MB vendors implement the
 690          * subdevice ID as per the Adaptec spec, so do our best
 691          * to sanity check it prior to accepting the subdevice
 692          * ID as valid.
 693          */
 694         if (ahc_get_pci_function(pci) > 0
 695          && ahc_9005_subdevinfo_valid(vendor, device, subvendor, subdevice)
 696          && SUBID_9005_MFUNCENB(subdevice) == 0)
 697                 return (NULL);
 698
 699         for (i = 0; i < ahc_num_pci_devs; i++) {
 700                 entry = &ahc_pci_ident_table[i];
 701                 if (entry->full_id == (full_id & entry->id_mask)) {
 702                         /* Honor exclusion entries. */
 703                         if (entry->name == NULL)
 704                                 return (NULL);
 705                         return (entry);
 706                 }
 707         }
 708         return (NULL);
 709 }
 710
 711 int
 712 ahc_pci_config(struct ahc_softc *ahc, const struct ahc_pci_identity *entry)
 713 {
 714         u_int    command;
 715         u_int    our_id;
 716         u_int    sxfrctl1;
 717         u_int    scsiseq;
 718         u_int    dscommand0;
 719         uint32_t devconfig;
 720         int      error;
 721         uint8_t  sblkctl;
 722
 723         our_id = 0;
 724         error = entry->setup(ahc);
 725         if (error != 0)
 726                 return (error);
 727         ahc->chip |= AHC_PCI;
 728         ahc->description = entry->name;
 729
 730         pci_set_power_state(ahc->dev_softc, AHC_POWER_STATE_D0);
 731
 732         error = ahc_pci_map_registers(ahc);
 733         if (error != 0)
 734                 return (error);
 735
 736         /*
 737          * Before we continue probing the card, ensure that
 738          * its interrupts are *disabled*.  We don't want
 739          * a misstep to hang the machine in an interrupt
 740          * storm.
 741          */
 742         ahc_intr_enable(ahc, FALSE);
 743
 744         devconfig = ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 745
 746         /*
 747          * If we need to support high memory, enable dual
 748          * address cycles.  This bit must be set to enable
 749          * high address bit generation even if we are on a
 750          * 64bit bus (PCI64BIT set in devconfig).
 751          */
 752         if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
 753
 754                 if (bootverbose)
 755                         printf("%s: Enabling 39Bit Addressing\n",
 756                                ahc_name(ahc));
 757                 devconfig |= DACEN;
 758         }
 759
 760         /* Ensure that pci error generation, a test feature, is disabled. */
 761         devconfig |= PCIERRGENDIS;
 762
 763         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
 764
 765         /* Ensure busmastering is enabled */
 766         command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
 767         command |= PCIM_CMD_BUSMASTEREN;
 768
 769         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
 770
 771         /* On all PCI adapters, we allow SCB paging */
 772         ahc->flags |= AHC_PAGESCBS;
 773
 774         error = ahc_softc_init(ahc);
 775         if (error != 0)
 776                 return (error);
 777
 778         /*
 779          * Disable PCI parity error checking.  Users typically
 780          * do this to work around broken PCI chipsets that get
 781          * the parity timing wrong and thus generate lots of spurious
 782          * errors.  The chip only allows us to disable *all* parity
 783          * error reporting when doing this, so CIO bus, scb ram, and
 784          * scratch ram parity errors will be ignored too.
 785          */
 786         if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
 787                 ahc->seqctl |= FAILDIS;
 788
 789         ahc->bus_intr = ahc_pci_intr;
 790         ahc->bus_chip_init = ahc_pci_chip_init;
 791
 792         /* Remeber how the card was setup in case there is no SEEPROM */
 793         if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
 794                 ahc_pause(ahc);
 795                 if ((ahc->features & AHC_ULTRA2) != 0)
 796                         our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
 797                 else
 798                         our_id = ahc_inb(ahc, SCSIID) & OID;
 799                 sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
 800                 scsiseq = ahc_inb(ahc, SCSISEQ);
 801         } else {
 802                 sxfrctl1 = STPWEN;
 803                 our_id = 7;
 804                 scsiseq = 0;
 805         }
 806
 807         error = ahc_reset(ahc, /*reinit*/FALSE);
 808         if (error != 0)
 809                 return (ENXIO);
 810
 811         if ((ahc->features & AHC_DT) != 0) {
 812                 u_int sfunct;
 813
 814                 /* Perform ALT-Mode Setup */
 815                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 816                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 817                 ahc_outb(ahc, OPTIONMODE,
 818                          OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
 819                 ahc_outb(ahc, SFUNCT, sfunct);
 820
 821                 /* Normal mode setup */
 822                 ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
 823                                           |TARGCRCENDEN);
 824         }
 825
 826         dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 827         dscommand0 |= MPARCKEN|CACHETHEN;
 828         if ((ahc->features & AHC_ULTRA2) != 0) {
 829
 830                 /*
 831                  * DPARCKEN doesn't work correctly on
 832                  * some MBs so don't use it.
 833                  */
 834                 dscommand0 &= ~DPARCKEN;
 835         }
 836
 837         /*
 838          * Handle chips that must have cache line
 839          * streaming (dis/en)abled.
 840          */
 841         if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
 842                 dscommand0 |= CACHETHEN;
 843
 844         if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
 845                 dscommand0 &= ~CACHETHEN;
 846
 847         ahc_outb(ahc, DSCOMMAND0, dscommand0);
 848
 849         ahc->pci_cachesize =
 850             ahc_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
 851                                 /*bytes*/1) & CACHESIZE;
 852         ahc->pci_cachesize *= 4;
 853
 854         if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
 855          && ahc->pci_cachesize == 4) {
 856
 857                 ahc_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
 858                                      0, /*bytes*/1);
 859                 ahc->pci_cachesize = 0;
 860         }
 861
 862         /*
 863          * We cannot perform ULTRA speeds without the presense
 864          * of the external precision resistor.
 865          */
 866         if ((ahc->features & AHC_ULTRA) != 0) {
 867                 uint32_t devconfig;
 868
 869                 devconfig = ahc_pci_read_config(ahc->dev_softc,
 870                                                 DEVCONFIG, /*bytes*/4);
 871                 if ((devconfig & REXTVALID) == 0)
 872                         ahc->features &= ~AHC_ULTRA;
 873         }
 874
 875         /* See if we have a SEEPROM and perform auto-term */
 876         check_extport(ahc, &sxfrctl1);
 877
 878         /*
 879          * Take the LED out of diagnostic mode
 880          */
 881         sblkctl = ahc_inb(ahc, SBLKCTL);
 882         ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
 883
 884         if ((ahc->features & AHC_ULTRA2) != 0) {
 885                 ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
 886         } else {
 887                 ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
 888         }
 889
 890         if (ahc->flags & AHC_USEDEFAULTS) {
 891                 /*
 892                  * PCI Adapter default setup
 893                  * Should only be used if the adapter does not have
 894                  * a SEEPROM.
 895                  */
 896                 /* See if someone else set us up already */
 897                 if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
 898                  && scsiseq != 0) {
 899                         printf("%s: Using left over BIOS settings\n",
 900                                 ahc_name(ahc));
 901                         ahc->flags &= ~AHC_USEDEFAULTS;
 902                         ahc->flags |= AHC_BIOS_ENABLED;
 903                 } else {
 904                         /*
 905                          * Assume only one connector and always turn
 906                          * on termination.
 907                          */
 908                         our_id = 0x07;
 909                         sxfrctl1 = STPWEN;
 910                 }
 911                 ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
 912
 913                 ahc->our_id = our_id;
 914         }
 915
 916         /*
 917          * Take a look to see if we have external SRAM.
 918          * We currently do not attempt to use SRAM that is
 919          * shared among multiple controllers.
 920          */
 921         ahc_probe_ext_scbram(ahc);
 922
 923         /*
 924          * Record our termination setting for the
 925          * generic initialization routine.
 926          */
 927         if ((sxfrctl1 & STPWEN) != 0)
 928                 ahc->flags |= AHC_TERM_ENB_A;
 929
 930         /*
 931          * Save chip register configuration data for chip resets
 932          * that occur during runtime and resume events.
 933          */
 934         ahc->bus_softc.pci_softc.devconfig =
 935             ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
 936         ahc->bus_softc.pci_softc.command =
 937             ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
 938         ahc->bus_softc.pci_softc.csize_lattime =
 939             ahc_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
 940         ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
 941         ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
 942         if ((ahc->features & AHC_DT) != 0) {
 943                 u_int sfunct;
 944
 945                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
 946                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
 947                 ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
 948                 ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
 949                 ahc_outb(ahc, SFUNCT, sfunct);
 950                 ahc->bus_softc.pci_softc.crccontrol1 =
 951                     ahc_inb(ahc, CRCCONTROL1);
 952         }
 953         if ((ahc->features & AHC_MULTI_FUNC) != 0)
 954                 ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
 955
 956         if ((ahc->features & AHC_ULTRA2) != 0)
 957                 ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
 958
 959         /* Core initialization */
 960         error = ahc_init(ahc);
 961         if (error != 0)
 962                 return (error);
 963
 964         /*
 965          * Allow interrupts now that we are completely setup.
 966          */
 967         error = ahc_pci_map_int(ahc);
 968         if (error != 0)
 969                 return (error);
 970
 971         ahc->init_level++;
 972         return (0);
 973 }
 974
 975 /*
 976  * Test for the presense of external sram in an
 977  * "unshared" configuration.
 978  */
 979 static int
 980 ahc_ext_scbram_present(struct ahc_softc *ahc)
 981 {
 982         u_int chip;
 983         int ramps;
 984         int single_user;
 985         uint32_t devconfig;
 986
 987         chip = ahc->chip & AHC_CHIPID_MASK;
 988         devconfig = ahc_pci_read_config(ahc->dev_softc,
 989                                         DEVCONFIG, /*bytes*/4);
 990         single_user = (devconfig & MPORTMODE) != 0;
 991
 992         if ((ahc->features & AHC_ULTRA2) != 0)
 993                 ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
 994         else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
 995                 /*
 996                  * External SCBRAM arbitration is flakey
 997                  * on these chips.  Unfortunately this means
 998                  * we don't use the extra SCB ram space on the
 999                  * 3940AUW.
1000                  */
1001                 ramps = 0;
1002         else if (chip >= AHC_AIC7870)
1003                 ramps = (devconfig & RAMPSM) != 0;
1004         else
1005                 ramps = 0;
1006
1007         if (ramps && single_user)
1008                 return (1);
1009         return (0);
1010 }
1011
1012 /*
1013  * Enable external scbram.
1014  */
1015 static void
1016 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1017                   int fast, int large)
1018 {
1019         uint32_t devconfig;
1020
1021         if (ahc->features & AHC_MULTI_FUNC) {
1022                 /*
1023                  * Set the SCB Base addr (highest address bit)
1024                  * depending on which channel we are.
1025                  */
1026                 ahc_outb(ahc, SCBBADDR, ahc_get_pci_function(ahc->dev_softc));
1027         }
1028
1029         ahc->flags &= ~AHC_LSCBS_ENABLED;
1030         if (large)
1031                 ahc->flags |= AHC_LSCBS_ENABLED;
1032         devconfig = ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1033         if ((ahc->features & AHC_ULTRA2) != 0) {
1034                 u_int dscommand0;
1035
1036                 dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1037                 if (enable)
1038                         dscommand0 &= ~INTSCBRAMSEL;
1039                 else
1040                         dscommand0 |= INTSCBRAMSEL;
1041                 if (large)
1042                         dscommand0 &= ~USCBSIZE32;
1043                 else
1044                         dscommand0 |= USCBSIZE32;
1045                 ahc_outb(ahc, DSCOMMAND0, dscommand0);
1046         } else {
1047                 if (fast)
1048                         devconfig &= ~EXTSCBTIME;
1049                 else
1050                         devconfig |= EXTSCBTIME;
1051                 if (enable)
1052                         devconfig &= ~SCBRAMSEL;
1053                 else
1054                         devconfig |= SCBRAMSEL;
1055                 if (large)
1056                         devconfig &= ~SCBSIZE32;
1057                 else
1058                         devconfig |= SCBSIZE32;
1059         }
1060         if (pcheck)
1061                 devconfig |= EXTSCBPEN;
1062         else
1063                 devconfig &= ~EXTSCBPEN;
1064
1065         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1066 }
1067
1068 /*
1069  * Take a look to see if we have external SRAM.
1070  * We currently do not attempt to use SRAM that is
1071  * shared among multiple controllers.
1072  */
1073 static void
1074 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1075 {
1076         int num_scbs;
1077         int test_num_scbs;
1078         int enable;
1079         int pcheck;
1080         int fast;
1081         int large;
1082
1083         enable = FALSE;
1084         pcheck = FALSE;
1085         fast = FALSE;
1086         large = FALSE;
1087         num_scbs = 0;
1088
1089         if (ahc_ext_scbram_present(ahc) == 0)
1090                 goto done;
1091
1092         /*
1093          * Probe for the best parameters to use.
1094          */
1095         ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1096         num_scbs = ahc_probe_scbs(ahc);
1097         if (num_scbs == 0) {
1098                 /* The SRAM wasn't really present. */
1099                 goto done;
1100         }
1101         enable = TRUE;
1102
1103         /*
1104          * Clear any outstanding parity error
1105          * and ensure that parity error reporting
1106          * is enabled.
1107          */
1108         ahc_outb(ahc, SEQCTL, 0);
1109         ahc_outb(ahc, CLRINT, CLRPARERR);
1110         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1111
1112         /* Now see if we can do parity */
1113         ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1114         num_scbs = ahc_probe_scbs(ahc);
1115         if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1116          || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1117                 pcheck = TRUE;
1118
1119         /* Clear any resulting parity error */
1120         ahc_outb(ahc, CLRINT, CLRPARERR);
1121         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1122
1123         /* Now see if we can do fast timing */
1124         ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1125         test_num_scbs = ahc_probe_scbs(ahc);
1126         if (test_num_scbs == num_scbs
1127          && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1128           || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1129                 fast = TRUE;
1130
1131         /*
1132          * See if we can use large SCBs and still maintain
1133          * the same overall count of SCBs.
1134          */
1135         if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1136                 ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1137                 test_num_scbs = ahc_probe_scbs(ahc);
1138                 if (test_num_scbs >= num_scbs) {
1139                         large = TRUE;
1140                         num_scbs = test_num_scbs;
1141                         if (num_scbs >= 64) {
1142                                 /*
1143                                  * We have enough space to move the
1144                                  * "busy targets table" into SCB space
1145                                  * and make it qualify all the way to the
1146                                  * lun level.
1147                                  */
1148                                 ahc->flags |= AHC_SCB_BTT;
1149                         }
1150                 }
1151         }
1152 done:
1153         /*
1154          * Disable parity error reporting until we
1155          * can load instruction ram.
1156          */
1157         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1158         /* Clear any latched parity error */
1159         ahc_outb(ahc, CLRINT, CLRPARERR);
1160         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1161         if (bootverbose && enable) {
1162                 printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1163                        ahc_name(ahc), fast ? "fast" : "slow",
1164                        pcheck ? ", parity checking enabled" : "",
1165                        large ? 64 : 32);
1166         }
1167         ahc_scbram_config(ahc, enable, pcheck, fast, large);
1168 }
1169
1170 /*
1171  * Perform some simple tests that should catch situations where
1172  * our registers are invalidly mapped.
1173  */
1174 int
1175 ahc_pci_test_register_access(struct ahc_softc *ahc)
1176 {
1177         int      error;
1178         u_int    status1;
1179         uint32_t cmd;
1180         uint8_t  hcntrl;
1181
1182         error = EIO;
1183
1184         /*
1185          * Enable PCI error interrupt status, but suppress NMIs
1186          * generated by SERR raised due to target aborts.
1187          */
1188         cmd = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1189         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1190                              cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1191
1192         /*
1193          * First a simple test to see if any
1194          * registers can be read.  Reading
1195          * HCNTRL has no side effects and has
1196          * at least one bit that is guaranteed to
1197          * be zero so it is a good register to
1198          * use for this test.
1199          */
1200         hcntrl = ahc_inb(ahc, HCNTRL);
1201
1202         if (hcntrl == 0xFF)
1203                 goto fail;
1204
1205         if ((hcntrl & CHIPRST) != 0) {
1206                 /*
1207                  * The chip has not been initialized since
1208                  * PCI/EISA/VLB bus reset.  Don't trust
1209                  * "left over BIOS data".
1210                  */
1211                 ahc->flags |= AHC_NO_BIOS_INIT;
1212         }
1213
1214         /*
1215          * Next create a situation where write combining
1216          * or read prefetching could be initiated by the
1217          * CPU or host bridge.  Our device does not support
1218          * either, so look for data corruption and/or flagged
1219          * PCI errors.  First pause without causing another
1220          * chip reset.
1221          */
1222         hcntrl &= ~CHIPRST;
1223         ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1224         while (ahc_is_paused(ahc) == 0)
1225                 ;
1226
1227         /* Clear any PCI errors that occurred before our driver attached. */
1228         status1 = ahc_pci_read_config(ahc->dev_softc,
1229                                       PCIR_STATUS + 1, /*bytes*/1);
1230         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1231                              status1, /*bytes*/1);
1232         ahc_outb(ahc, CLRINT, CLRPARERR);
1233
1234         ahc_outb(ahc, SEQCTL, PERRORDIS);
1235         ahc_outb(ahc, SCBPTR, 0);
1236         ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1237         if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1238                 goto fail;
1239
1240         status1 = ahc_pci_read_config(ahc->dev_softc,
1241                                       PCIR_STATUS + 1, /*bytes*/1);
1242         if ((status1 & STA) != 0)
1243                 goto fail;
1244
1245         error = 0;
1246
1247 fail:
1248         /* Silently clear any latched errors. */
1249         status1 = ahc_pci_read_config(ahc->dev_softc,
1250                                       PCIR_STATUS + 1, /*bytes*/1);
1251         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1252                              status1, /*bytes*/1);
1253         ahc_outb(ahc, CLRINT, CLRPARERR);
1254         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1255         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1256         return (error);
1257 }
1258
1259 /*
1260  * Check the external port logic for a serial eeprom
1261  * and termination/cable detection contrls.
1262  */
1263 static void
1264 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1265 {
1266         struct  seeprom_descriptor sd;
1267         struct  seeprom_config *sc;
1268         int     have_seeprom;
1269         int     have_autoterm;
1270
1271         sd.sd_ahc = ahc;
1272         sd.sd_control_offset = SEECTL;
1273         sd.sd_status_offset = SEECTL;
1274         sd.sd_dataout_offset = SEECTL;
1275         sc = ahc->seep_config;
1276
1277         /*
1278          * For some multi-channel devices, the c46 is simply too
1279          * small to work.  For the other controller types, we can
1280          * get our information from either SEEPROM type.  Set the
1281          * type to start our probe with accordingly.
1282          */
1283         if (ahc->flags & AHC_LARGE_SEEPROM)
1284                 sd.sd_chip = C56_66;
1285         else
1286                 sd.sd_chip = C46;
1287
1288         sd.sd_MS = SEEMS;
1289         sd.sd_RDY = SEERDY;
1290         sd.sd_CS = SEECS;
1291         sd.sd_CK = SEECK;
1292         sd.sd_DO = SEEDO;
1293         sd.sd_DI = SEEDI;
1294
1295         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1296         if (have_seeprom) {
1297
1298                 if (bootverbose)
1299                         printf("%s: Reading SEEPROM...", ahc_name(ahc));
1300
1301                 for (;;) {
1302                         u_int start_addr;
1303
1304                         start_addr = 32 * (ahc->channel - 'A');
1305
1306                         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1307                                                         start_addr,
1308                                                         sizeof(*sc)/2);
1309
1310                         if (have_seeprom)
1311                                 have_seeprom = ahc_verify_cksum(sc);
1312
1313                         if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1314                                 if (bootverbose) {
1315                                         if (have_seeprom == 0)
1316                                                 printf ("checksum error\n");
1317                                         else
1318                                                 printf ("done.\n");
1319                                 }
1320                                 break;
1321                         }
1322                         sd.sd_chip = C56_66;
1323                 }
1324                 ahc_release_seeprom(&sd);
1325
1326                 /* Remember the SEEPROM type for later */
1327                 if (sd.sd_chip == C56_66)
1328                         ahc->flags |= AHC_LARGE_SEEPROM;
1329         }
1330
1331         if (!have_seeprom) {
1332                 /*
1333                  * Pull scratch ram settings and treat them as
1334                  * if they are the contents of an seeprom if
1335                  * the 'ADPT' signature is found in SCB2.
1336                  * We manually compose the data as 16bit values
1337                  * to avoid endian issues.
1338                  */
1339                 ahc_outb(ahc, SCBPTR, 2);
1340                 if (ahc_inb(ahc, SCB_BASE) == 'A'
1341                  && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1342                  && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1343                  && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1344                         uint16_t *sc_data;
1345                         int       i;
1346
1347                         sc_data = (uint16_t *)sc;
1348                         for (i = 0; i < 32; i++, sc_data++) {
1349                                 int     j;
1350
1351                                 j = i * 2;
1352                                 *sc_data = ahc_inb(ahc, SRAM_BASE + j)
1353                                          | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1354                         }
1355                         have_seeprom = ahc_verify_cksum(sc);
1356                         if (have_seeprom)
1357                                 ahc->flags |= AHC_SCB_CONFIG_USED;
1358                 }
1359                 /*
1360                  * Clear any SCB parity errors in case this data and
1361                  * its associated parity was not initialized by the BIOS
1362                  */
1363                 ahc_outb(ahc, CLRINT, CLRPARERR);
1364                 ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1365         }
1366
1367         if (!have_seeprom) {
1368                 if (bootverbose)
1369                         printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1370                 ahc->flags |= AHC_USEDEFAULTS;
1371                 free(ahc->seep_config, M_DEVBUF);
1372                 ahc->seep_config = NULL;
1373                 sc = NULL;
1374         } else {
1375                 ahc_parse_pci_eeprom(ahc, sc);
1376         }
1377
1378         /*
1379          * Cards that have the external logic necessary to talk to
1380          * a SEEPROM, are almost certain to have the remaining logic
1381          * necessary for auto-termination control.  This assumption
1382          * hasn't failed yet...
1383          */
1384         have_autoterm = have_seeprom;
1385
1386         /*
1387          * Some low-cost chips have SEEPROM and auto-term control built
1388          * in, instead of using a GAL.  They can tell us directly
1389          * if the termination logic is enabled.
1390          */
1391         if ((ahc->features & AHC_SPIOCAP) != 0) {
1392                 if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1393                         have_autoterm = FALSE;
1394         }
1395
1396         if (have_autoterm) {
1397                 ahc->flags |= AHC_HAS_TERM_LOGIC;
1398                 ahc_acquire_seeprom(ahc, &sd);
1399                 configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1400                 ahc_release_seeprom(&sd);
1401         } else if (have_seeprom) {
1402                 *sxfrctl1 &= ~STPWEN;
1403                 if ((sc->adapter_control & CFSTERM) != 0)
1404                         *sxfrctl1 |= STPWEN;
1405                 if (bootverbose)
1406                         printf("%s: Low byte termination %sabled\n",
1407                                ahc_name(ahc),
1408                                (*sxfrctl1 & STPWEN) ? "en" : "dis");
1409         }
1410 }
1411
1412 static void
1413 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1414 {
1415         /*
1416          * Put the data we've collected down into SRAM
1417          * where ahc_init will find it.
1418          */
1419         int      i;
1420         int      max_targ = sc->max_targets & CFMAXTARG;
1421         u_int    scsi_conf;
1422         uint16_t discenable;
1423         uint16_t ultraenb;
1424
1425         discenable = 0;
1426         ultraenb = 0;
1427         if ((sc->adapter_control & CFULTRAEN) != 0) {
1428                 /*
1429                  * Determine if this adapter has a "newstyle"
1430                  * SEEPROM format.
1431                  */
1432                 for (i = 0; i < max_targ; i++) {
1433                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1434                                 ahc->flags |= AHC_NEWEEPROM_FMT;
1435                                 break;
1436                         }
1437                 }
1438         }
1439
1440         for (i = 0; i < max_targ; i++) {
1441                 u_int     scsirate;
1442                 uint16_t target_mask;
1443
1444                 target_mask = 0x01 << i;
1445                 if (sc->device_flags[i] & CFDISC)
1446                         discenable |= target_mask;
1447                 if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1448                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1449                                 ultraenb |= target_mask;
1450                 } else if ((sc->adapter_control & CFULTRAEN) != 0) {
1451                         ultraenb |= target_mask;
1452                 }
1453                 if ((sc->device_flags[i] & CFXFER) == 0x04
1454                  && (ultraenb & target_mask) != 0) {
1455                         /* Treat 10MHz as a non-ultra speed */
1456                         sc->device_flags[i] &= ~CFXFER;
1457                         ultraenb &= ~target_mask;
1458                 }
1459                 if ((ahc->features & AHC_ULTRA2) != 0) {
1460                         u_int offset;
1461
1462                         if (sc->device_flags[i] & CFSYNCH)
1463                                 offset = MAX_OFFSET_ULTRA2;
1464                         else
1465                                 offset = 0;
1466                         ahc_outb(ahc, TARG_OFFSET + i, offset);
1467
1468                         /*
1469                          * The ultra enable bits contain the
1470                          * high bit of the ultra2 sync rate
1471                          * field.
1472                          */
1473                         scsirate = (sc->device_flags[i] & CFXFER)
1474                                  | ((ultraenb & target_mask) ? 0x8 : 0x0);
1475                         if (sc->device_flags[i] & CFWIDEB)
1476                                 scsirate |= WIDEXFER;
1477                 } else {
1478                         scsirate = (sc->device_flags[i] & CFXFER) << 4;
1479                         if (sc->device_flags[i] & CFSYNCH)
1480                                 scsirate |= SOFS;
1481                         if (sc->device_flags[i] & CFWIDEB)
1482                                 scsirate |= WIDEXFER;
1483                 }
1484                 ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1485         }
1486         ahc->our_id = sc->brtime_id & CFSCSIID;
1487
1488         scsi_conf = (ahc->our_id & 0x7);
1489         if (sc->adapter_control & CFSPARITY)
1490                 scsi_conf |= ENSPCHK;
1491         if (sc->adapter_control & CFRESETB)
1492                 scsi_conf |= RESET_SCSI;
1493
1494         ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1495
1496         if (sc->bios_control & CFEXTEND)
1497                 ahc->flags |= AHC_EXTENDED_TRANS_A;
1498
1499         if (sc->bios_control & CFBIOSEN)
1500                 ahc->flags |= AHC_BIOS_ENABLED;
1501         if (ahc->features & AHC_ULTRA
1502          && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1503                 /* Should we enable Ultra mode? */
1504                 if (!(sc->adapter_control & CFULTRAEN))
1505                         /* Treat us as a non-ultra card */
1506                         ultraenb = 0;
1507         }
1508
1509         if (sc->signature == CFSIGNATURE
1510          || sc->signature == CFSIGNATURE2) {
1511                 uint32_t devconfig;
1512
1513                 /* Honor the STPWLEVEL settings */
1514                 devconfig = ahc_pci_read_config(ahc->dev_softc,
1515                                                 DEVCONFIG, /*bytes*/4);
1516                 devconfig &= ~STPWLEVEL;
1517                 if ((sc->bios_control & CFSTPWLEVEL) != 0)
1518                         devconfig |= STPWLEVEL;
1519                 ahc_pci_write_config(ahc->dev_softc, DEVCONFIG,
1520                                      devconfig, /*bytes*/4);
1521         }
1522         /* Set SCSICONF info */
1523         ahc_outb(ahc, SCSICONF, scsi_conf);
1524         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1525         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1526         ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1527         ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1528 }
1529
1530 static void
1531 configure_termination(struct ahc_softc *ahc,
1532                       struct seeprom_descriptor *sd,
1533                       u_int adapter_control,
1534                       u_int *sxfrctl1)
1535 {
1536         uint8_t brddat;
1537
1538         brddat = 0;
1539
1540         /*
1541          * Update the settings in sxfrctl1 to match the
1542          * termination settings
1543          */
1544         *sxfrctl1 = 0;
1545
1546         /*
1547          * SEECS must be on for the GALS to latch
1548          * the data properly.  Be sure to leave MS
1549          * on or we will release the seeprom.
1550          */
1551         SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1552         if ((adapter_control & CFAUTOTERM) != 0
1553          || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1554                 int internal50_present;
1555                 int internal68_present;
1556                 int externalcable_present;
1557                 int eeprom_present;
1558                 int enableSEC_low;
1559                 int enableSEC_high;
1560                 int enablePRI_low;
1561                 int enablePRI_high;
1562                 int sum;
1563
1564                 enableSEC_low = 0;
1565                 enableSEC_high = 0;
1566                 enablePRI_low = 0;
1567                 enablePRI_high = 0;
1568                 if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1569                         ahc_new_term_detect(ahc, &enableSEC_low,
1570                                             &enableSEC_high,
1571                                             &enablePRI_low,
1572                                             &enablePRI_high,
1573                                             &eeprom_present);
1574                         if ((adapter_control & CFSEAUTOTERM) == 0) {
1575                                 if (bootverbose)
1576                                         printf("%s: Manual SE Termination\n",
1577                                                ahc_name(ahc));
1578                                 enableSEC_low = (adapter_control & CFSELOWTERM);
1579                                 enableSEC_high =
1580                                     (adapter_control & CFSEHIGHTERM);
1581                         }
1582                         if ((adapter_control & CFAUTOTERM) == 0) {
1583                                 if (bootverbose)
1584                                         printf("%s: Manual LVD Termination\n",
1585                                                ahc_name(ahc));
1586                                 enablePRI_low = (adapter_control & CFSTERM);
1587                                 enablePRI_high = (adapter_control & CFWSTERM);
1588                         }
1589                         /* Make the table calculations below happy */
1590                         internal50_present = 0;
1591                         internal68_present = 1;
1592                         externalcable_present = 1;
1593                 } else if ((ahc->features & AHC_SPIOCAP) != 0) {
1594                         aic785X_cable_detect(ahc, &internal50_present,
1595                                              &externalcable_present,
1596                                              &eeprom_present);
1597                         /* Can never support a wide connector. */
1598                         internal68_present = 0;
1599                 } else {
1600                         aic787X_cable_detect(ahc, &internal50_present,
1601                                              &internal68_present,
1602                                              &externalcable_present,
1603                                              &eeprom_present);
1604                 }
1605
1606                 if ((ahc->features & AHC_WIDE) == 0)
1607                         internal68_present = 0;
1608
1609                 if (bootverbose
1610                  && (ahc->features & AHC_ULTRA2) == 0) {
1611                         printf("%s: internal 50 cable %s present",
1612                                ahc_name(ahc),
1613                                internal50_present ? "is":"not");
1614
1615                         if ((ahc->features & AHC_WIDE) != 0)
1616                                 printf(", internal 68 cable %s present",
1617                                        internal68_present ? "is":"not");
1618                         printf("\n%s: external cable %s present\n",
1619                                ahc_name(ahc),
1620                                externalcable_present ? "is":"not");
1621                 }
1622                 if (bootverbose)
1623                         printf("%s: BIOS eeprom %s present\n",
1624                                ahc_name(ahc), eeprom_present ? "is" : "not");
1625
1626                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1627                         /*
1628                          * The 50 pin connector is a separate bus,
1629                          * so force it to always be terminated.
1630                          * In the future, perform current sensing
1631                          * to determine if we are in the middle of
1632                          * a properly terminated bus.
1633                          */
1634                         internal50_present = 0;
1635                 }
1636
1637                 /*
1638                  * Now set the termination based on what
1639                  * we found.
1640                  * Flash Enable = BRDDAT7
1641                  * Secondary High Term Enable = BRDDAT6
1642                  * Secondary Low Term Enable = BRDDAT5 (7890)
1643                  * Primary High Term Enable = BRDDAT4 (7890)
1644                  */
1645                 if ((ahc->features & AHC_ULTRA2) == 0
1646                  && (internal50_present != 0)
1647                  && (internal68_present != 0)
1648                  && (externalcable_present != 0)) {
1649                         printf("%s: Illegal cable configuration!!. "
1650                                "Only two connectors on the "
1651                                "adapter may be used at a "
1652                                "time!\n", ahc_name(ahc));
1653
1654                         /*
1655                          * Pretend there are no cables in the hope
1656                          * that having all of the termination on
1657                          * gives us a more stable bus.
1658                          */
1659                         internal50_present = 0;
1660                         internal68_present = 0;
1661                         externalcable_present = 0;
1662                 }
1663
1664                 if ((ahc->features & AHC_WIDE) != 0
1665                  && ((externalcable_present == 0)
1666                   || (internal68_present == 0)
1667                   || (enableSEC_high != 0))) {
1668                         brddat |= BRDDAT6;
1669                         if (bootverbose) {
1670                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1671                                         printf("%s: 68 pin termination "
1672                                                "Enabled\n", ahc_name(ahc));
1673                                 else
1674                                         printf("%s: %sHigh byte termination "
1675                                                "Enabled\n", ahc_name(ahc),
1676                                                enableSEC_high ? "Secondary "
1677                                                               : "");
1678                         }
1679                 }
1680
1681                 sum = internal50_present + internal68_present
1682                     + externalcable_present;
1683                 if (sum < 2 || (enableSEC_low != 0)) {
1684                         if ((ahc->features & AHC_ULTRA2) != 0)
1685                                 brddat |= BRDDAT5;
1686                         else
1687                                 *sxfrctl1 |= STPWEN;
1688                         if (bootverbose) {
1689                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1690                                         printf("%s: 50 pin termination "
1691                                                "Enabled\n", ahc_name(ahc));
1692                                 else
1693                                         printf("%s: %sLow byte termination "
1694                                                "Enabled\n", ahc_name(ahc),
1695                                                enableSEC_low ? "Secondary "
1696                                                              : "");
1697                         }
1698                 }
1699
1700                 if (enablePRI_low != 0) {
1701                         *sxfrctl1 |= STPWEN;
1702                         if (bootverbose)
1703                                 printf("%s: Primary Low Byte termination "
1704                                        "Enabled\n", ahc_name(ahc));
1705                 }
1706
1707                 /*
1708                  * Setup STPWEN before setting up the rest of
1709                  * the termination per the tech note on the U160 cards.
1710                  */
1711                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1712
1713                 if (enablePRI_high != 0) {
1714                         brddat |= BRDDAT4;
1715                         if (bootverbose)
1716                                 printf("%s: Primary High Byte "
1717                                        "termination Enabled\n",
1718                                        ahc_name(ahc));
1719                 }
1720
1721                 write_brdctl(ahc, brddat);
1722
1723         } else {
1724                 if ((adapter_control & CFSTERM) != 0) {
1725                         *sxfrctl1 |= STPWEN;
1726
1727                         if (bootverbose)
1728                                 printf("%s: %sLow byte termination Enabled\n",
1729                                        ahc_name(ahc),
1730                                        (ahc->features & AHC_ULTRA2) ? "Primary "
1731                                                                     : "");
1732                 }
1733
1734                 if ((adapter_control & CFWSTERM) != 0
1735                  && (ahc->features & AHC_WIDE) != 0) {
1736                         brddat |= BRDDAT6;
1737                         if (bootverbose)
1738                                 printf("%s: %sHigh byte termination Enabled\n",
1739                                        ahc_name(ahc),
1740                                        (ahc->features & AHC_ULTRA2)
1741                                      ? "Secondary " : "");
1742                 }
1743
1744                 /*
1745                  * Setup STPWEN before setting up the rest of
1746                  * the termination per the tech note on the U160 cards.
1747                  */
1748                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1749
1750                 if ((ahc->features & AHC_WIDE) != 0)
1751                         write_brdctl(ahc, brddat);
1752         }
1753         SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1754 }
1755
1756 static void
1757 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1758                     int *enableSEC_high, int *enablePRI_low,
1759                     int *enablePRI_high, int *eeprom_present)
1760 {
1761         uint8_t brdctl;
1762
1763         /*
1764          * BRDDAT7 = Eeprom
1765          * BRDDAT6 = Enable Secondary High Byte termination
1766          * BRDDAT5 = Enable Secondary Low Byte termination
1767          * BRDDAT4 = Enable Primary high byte termination
1768          * BRDDAT3 = Enable Primary low byte termination
1769          */
1770         brdctl = read_brdctl(ahc);
1771         *eeprom_present = brdctl & BRDDAT7;
1772         *enableSEC_high = (brdctl & BRDDAT6);
1773         *enableSEC_low = (brdctl & BRDDAT5);
1774         *enablePRI_high = (brdctl & BRDDAT4);
1775         *enablePRI_low = (brdctl & BRDDAT3);
1776 }
1777
1778 static void
1779 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1780                      int *internal68_present, int *externalcable_present,
1781                      int *eeprom_present)
1782 {
1783         uint8_t brdctl;
1784
1785         /*
1786          * First read the status of our cables.
1787          * Set the rom bank to 0 since the
1788          * bank setting serves as a multiplexor
1789          * for the cable detection logic.
1790          * BRDDAT5 controls the bank switch.
1791          */
1792         write_brdctl(ahc, 0);
1793
1794         /*
1795          * Now read the state of the internal
1796          * connectors.  BRDDAT6 is INT50 and
1797          * BRDDAT7 is INT68.
1798          */
1799         brdctl = read_brdctl(ahc);
1800         *internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1801         *internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1802
1803         /*
1804          * Set the rom bank to 1 and determine
1805          * the other signals.
1806          */
1807         write_brdctl(ahc, BRDDAT5);
1808
1809         /*
1810          * Now read the state of the external
1811          * connectors.  BRDDAT6 is EXT68 and
1812          * BRDDAT7 is EPROMPS.
1813          */
1814         brdctl = read_brdctl(ahc);
1815         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1816         *eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1817 }
1818
1819 static void
1820 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1821                      int *externalcable_present, int *eeprom_present)
1822 {
1823         uint8_t brdctl;
1824         uint8_t spiocap;
1825
1826         spiocap = ahc_inb(ahc, SPIOCAP);
1827         spiocap &= ~SOFTCMDEN;
1828         spiocap |= EXT_BRDCTL;
1829         ahc_outb(ahc, SPIOCAP, spiocap);
1830         ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1831         ahc_flush_device_writes(ahc);
1832         ahc_delay(500);
1833         ahc_outb(ahc, BRDCTL, 0);
1834         ahc_flush_device_writes(ahc);
1835         ahc_delay(500);
1836         brdctl = ahc_inb(ahc, BRDCTL);
1837         *internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1838         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1839         *eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1840 }
1841
1842 int
1843 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1844 {
1845         int wait;
1846
1847         if ((ahc->features & AHC_SPIOCAP) != 0
1848          && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1849                 return (0);
1850
1851         /*
1852          * Request access of the memory port.  When access is
1853          * granted, SEERDY will go high.  We use a 1 second
1854          * timeout which should be near 1 second more than
1855          * is needed.  Reason: after the chip reset, there
1856          * should be no contention.
1857          */
1858         SEEPROM_OUTB(sd, sd->sd_MS);
1859         wait = 1000;  /* 1 second timeout in msec */
1860         while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1861                 ahc_delay(1000);  /* delay 1 msec */
1862         }
1863         if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1864                 SEEPROM_OUTB(sd, 0);
1865                 return (0);
1866         }
1867         return(1);
1868 }
1869
1870 void
1871 ahc_release_seeprom(struct seeprom_descriptor *sd)
1872 {
1873         /* Release access to the memory port and the serial EEPROM. */
1874         SEEPROM_OUTB(sd, 0);
1875 }
1876
1877 static void
1878 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1879 {
1880         uint8_t brdctl;
1881
1882         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1883                 brdctl = BRDSTB;
1884                 if (ahc->channel == 'B')
1885                         brdctl |= BRDCS;
1886         } else if ((ahc->features & AHC_ULTRA2) != 0) {
1887                 brdctl = 0;
1888         } else {
1889                 brdctl = BRDSTB|BRDCS;
1890         }
1891         ahc_outb(ahc, BRDCTL, brdctl);
1892         ahc_flush_device_writes(ahc);
1893         brdctl |= value;
1894         ahc_outb(ahc, BRDCTL, brdctl);
1895         ahc_flush_device_writes(ahc);
1896         if ((ahc->features & AHC_ULTRA2) != 0)
1897                 brdctl |= BRDSTB_ULTRA2;
1898         else
1899                 brdctl &= ~BRDSTB;
1900         ahc_outb(ahc, BRDCTL, brdctl);
1901         ahc_flush_device_writes(ahc);
1902         if ((ahc->features & AHC_ULTRA2) != 0)
1903                 brdctl = 0;
1904         else
1905                 brdctl &= ~BRDCS;
1906         ahc_outb(ahc, BRDCTL, brdctl);
1907 }
1908
1909 static uint8_t
1910 read_brdctl(struct ahc_softc *ahc)
1911 {
1912         uint8_t brdctl;
1913         uint8_t value;
1914
1915         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1916                 brdctl = BRDRW;
1917                 if (ahc->channel == 'B')
1918                         brdctl |= BRDCS;
1919         } else if ((ahc->features & AHC_ULTRA2) != 0) {
1920                 brdctl = BRDRW_ULTRA2;
1921         } else {
1922                 brdctl = BRDRW|BRDCS;
1923         }
1924         ahc_outb(ahc, BRDCTL, brdctl);
1925         ahc_flush_device_writes(ahc);
1926         value = ahc_inb(ahc, BRDCTL);
1927         ahc_outb(ahc, BRDCTL, 0);
1928         return (value);
1929 }
1930
1931 static void
1932 ahc_pci_intr(struct ahc_softc *ahc)
1933 {
1934         u_int error;
1935         u_int status1;
1936
1937         error = ahc_inb(ahc, ERROR);
1938         if ((error & PCIERRSTAT) == 0)
1939                 return;
1940
1941         status1 = ahc_pci_read_config(ahc->dev_softc,
1942                                       PCIR_STATUS + 1, /*bytes*/1);
1943
1944         printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
1945               ahc_name(ahc),
1946               ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
1947
1948         if (status1 & DPE) {
1949                 ahc->pci_target_perr_count++;
1950                 printf("%s: Data Parity Error Detected during address "
1951                        "or write data phase\n", ahc_name(ahc));
1952         }
1953         if (status1 & SSE) {
1954                 printf("%s: Signal System Error Detected\n", ahc_name(ahc));
1955         }
1956         if (status1 & RMA) {
1957                 printf("%s: Received a Master Abort\n", ahc_name(ahc));
1958         }
1959         if (status1 & RTA) {
1960                 printf("%s: Received a Target Abort\n", ahc_name(ahc));
1961         }
1962         if (status1 & STA) {
1963                 printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
1964         }
1965         if (status1 & DPR) {
1966                 printf("%s: Data Parity Error has been reported via PERR#\n",
1967                        ahc_name(ahc));
1968         }
1969
1970         /* Clear latched errors. */
1971         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1972                              status1, /*bytes*/1);
1973
1974         if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
1975                 printf("%s: Latched PCIERR interrupt with "
1976                        "no status bits set\n", ahc_name(ahc));
1977         } else {
1978                 ahc_outb(ahc, CLRINT, CLRPARERR);
1979         }
1980
1981         if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH) {
1982                 printf(
1983 "%s: WARNING WARNING WARNING WARNING\n"
1984 "%s: Too many PCI parity errors observed as a target.\n"
1985 "%s: Some device on this bus is generating bad parity.\n"
1986 "%s: This is an error *observed by*, not *generated by*, this controller.\n"
1987 "%s: PCI parity error checking has been disabled.\n"
1988 "%s: WARNING WARNING WARNING WARNING\n",
1989                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
1990                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc));
1991                 ahc->seqctl |= FAILDIS;
1992                 ahc_outb(ahc, SEQCTL, ahc->seqctl);
1993         }
1994         ahc_unpause(ahc);
1995 }
1996
1997 static int
1998 ahc_pci_chip_init(struct ahc_softc *ahc)
1999 {
2000         ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2001         ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2002         if ((ahc->features & AHC_DT) != 0) {
2003                 u_int sfunct;
2004
2005                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2006                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2007                 ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2008                 ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2009                 ahc_outb(ahc, SFUNCT, sfunct);
2010                 ahc_outb(ahc, CRCCONTROL1,
2011                          ahc->bus_softc.pci_softc.crccontrol1);
2012         }
2013         if ((ahc->features & AHC_MULTI_FUNC) != 0)
2014                 ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2015
2016         if ((ahc->features & AHC_ULTRA2) != 0)
2017                 ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2018
2019         return (ahc_chip_init(ahc));
2020 }
2021
2022 #ifdef CONFIG_PM
2023 void
2024 ahc_pci_resume(struct ahc_softc *ahc)
2025 {
2026         /*
2027          * We assume that the OS has restored our register
2028          * mappings, etc.  Just update the config space registers
2029          * that the OS doesn't know about and rely on our chip
2030          * reset handler to handle the rest.
2031          */
2032         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG,
2033                              ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2034         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2035                              ahc->bus_softc.pci_softc.command, /*bytes*/1);
2036         ahc_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2037                              ahc->bus_softc.pci_softc.csize_lattime, /*bytes*/1);
2038         if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2039                 struct  seeprom_descriptor sd;
2040                 u_int   sxfrctl1;
2041
2042                 sd.sd_ahc = ahc;
2043                 sd.sd_control_offset = SEECTL;
2044                 sd.sd_status_offset = SEECTL;
2045                 sd.sd_dataout_offset = SEECTL;
2046
2047                 ahc_acquire_seeprom(ahc, &sd);
2048                 configure_termination(ahc, &sd,
2049                                       ahc->seep_config->adapter_control,
2050                                       &sxfrctl1);
2051                 ahc_release_seeprom(&sd);
2052         }
2053 }
2054 #endif
2055
2056 static int
2057 ahc_aic785X_setup(struct ahc_softc *ahc)
2058 {
2059         ahc_dev_softc_t pci;
2060         uint8_t rev;
2061
2062         pci = ahc->dev_softc;
2063         ahc->channel = 'A';
2064         ahc->chip = AHC_AIC7850;
2065         ahc->features = AHC_AIC7850_FE;
2066         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2067         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2068         if (rev >= 1)
2069                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2070         ahc->instruction_ram_size = 512;
2071         return (0);
2072 }
2073
2074 static int
2075 ahc_aic7860_setup(struct ahc_softc *ahc)
2076 {
2077         ahc_dev_softc_t pci;
2078         uint8_t rev;
2079
2080         pci = ahc->dev_softc;
2081         ahc->channel = 'A';
2082         ahc->chip = AHC_AIC7860;
2083         ahc->features = AHC_AIC7860_FE;
2084         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2085         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2086         if (rev >= 1)
2087                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2088         ahc->instruction_ram_size = 512;
2089         return (0);
2090 }
2091
2092 static int
2093 ahc_apa1480_setup(struct ahc_softc *ahc)
2094 {
2095         int error;
2096
2097         error = ahc_aic7860_setup(ahc);
2098         if (error != 0)
2099                 return (error);
2100         ahc->features |= AHC_REMOVABLE;
2101         return (0);
2102 }
2103
2104 static int
2105 ahc_aic7870_setup(struct ahc_softc *ahc)
2106 {
2107
2108         ahc->channel = 'A';
2109         ahc->chip = AHC_AIC7870;
2110         ahc->features = AHC_AIC7870_FE;
2111         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2112         ahc->instruction_ram_size = 512;
2113         return (0);
2114 }
2115
2116 static int
2117 ahc_aic7870h_setup(struct ahc_softc *ahc)
2118 {
2119         int error = ahc_aic7870_setup(ahc);
2120
2121         ahc->features |= AHC_HVD;
2122
2123         return error;
2124 }
2125
2126 static int
2127 ahc_aha394X_setup(struct ahc_softc *ahc)
2128 {
2129         int error;
2130
2131         error = ahc_aic7870_setup(ahc);
2132         if (error == 0)
2133                 error = ahc_aha394XX_setup(ahc);
2134         return (error);
2135 }
2136
2137 static int
2138 ahc_aha394Xh_setup(struct ahc_softc *ahc)
2139 {
2140         int error = ahc_aha394X_setup(ahc);
2141
2142         ahc->features |= AHC_HVD;
2143
2144         return error;
2145 }
2146
2147 static int
2148 ahc_aha398X_setup(struct ahc_softc *ahc)
2149 {
2150         int error;
2151
2152         error = ahc_aic7870_setup(ahc);
2153         if (error == 0)
2154                 error = ahc_aha398XX_setup(ahc);
2155         return (error);
2156 }
2157
2158 static int
2159 ahc_aha494X_setup(struct ahc_softc *ahc)
2160 {
2161         int error;
2162
2163         error = ahc_aic7870_setup(ahc);
2164         if (error == 0)
2165                 error = ahc_aha494XX_setup(ahc);
2166         return (error);
2167 }
2168
2169 static int
2170 ahc_aha494Xh_setup(struct ahc_softc *ahc)
2171 {
2172         int error = ahc_aha494X_setup(ahc);
2173
2174         ahc->features |= AHC_HVD;
2175
2176         return error;
2177 }
2178
2179 static int
2180 ahc_aic7880_setup(struct ahc_softc *ahc)
2181 {
2182         ahc_dev_softc_t pci;
2183         uint8_t rev;
2184
2185         pci = ahc->dev_softc;
2186         ahc->channel = 'A';
2187         ahc->chip = AHC_AIC7880;
2188         ahc->features = AHC_AIC7880_FE;
2189         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2190         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2191         if (rev >= 1) {
2192                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2193         } else {
2194                 ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2195         }
2196         ahc->instruction_ram_size = 512;
2197         return (0);
2198 }
2199
2200 static int
2201 ahc_aic7880h_setup(struct ahc_softc *ahc)
2202 {
2203         int error = ahc_aic7880_setup(ahc);
2204
2205         ahc->features |= AHC_HVD;
2206
2207         return error;
2208 }
2209
2210
2211 static int
2212 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2213 {
2214
2215         ahc->flags |= AHC_INT50_SPEEDFLEX;
2216         return (ahc_aic7880_setup(ahc));
2217 }
2218
2219 static int
2220 ahc_aha394XU_setup(struct ahc_softc *ahc)
2221 {
2222         int error;
2223
2224         error = ahc_aic7880_setup(ahc);
2225         if (error == 0)
2226                 error = ahc_aha394XX_setup(ahc);
2227         return (error);
2228 }
2229
2230 static int
2231 ahc_aha394XUh_setup(struct ahc_softc *ahc)
2232 {
2233         int error = ahc_aha394XU_setup(ahc);
2234
2235         ahc->features |= AHC_HVD;
2236
2237         return error;
2238 }
2239
2240 static int
2241 ahc_aha398XU_setup(struct ahc_softc *ahc)
2242 {
2243         int error;
2244
2245         error = ahc_aic7880_setup(ahc);
2246         if (error == 0)
2247                 error = ahc_aha398XX_setup(ahc);
2248         return (error);
2249 }
2250
2251 static int
2252 ahc_aic7890_setup(struct ahc_softc *ahc)
2253 {
2254         ahc_dev_softc_t pci;
2255         uint8_t rev;
2256
2257         pci = ahc->dev_softc;
2258         ahc->channel = 'A';
2259         ahc->chip = AHC_AIC7890;
2260         ahc->features = AHC_AIC7890_FE;
2261         ahc->flags |= AHC_NEWEEPROM_FMT;
2262         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2263         if (rev == 0)
2264                 ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2265         ahc->instruction_ram_size = 768;
2266         return (0);
2267 }
2268
2269 static int
2270 ahc_aic7892_setup(struct ahc_softc *ahc)
2271 {
2272
2273         ahc->channel = 'A';
2274         ahc->chip = AHC_AIC7892;
2275         ahc->features = AHC_AIC7892_FE;
2276         ahc->flags |= AHC_NEWEEPROM_FMT;
2277         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2278         ahc->instruction_ram_size = 1024;
2279         return (0);
2280 }
2281
2282 static int
2283 ahc_aic7895_setup(struct ahc_softc *ahc)
2284 {
2285         ahc_dev_softc_t pci;
2286         uint8_t rev;
2287
2288         pci = ahc->dev_softc;
2289         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2290         /*
2291          * The 'C' revision of the aic7895 has a few additional features.
2292          */
2293         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2294         if (rev >= 4) {
2295                 ahc->chip = AHC_AIC7895C;
2296                 ahc->features = AHC_AIC7895C_FE;
2297         } else  {
2298                 u_int command;
2299
2300                 ahc->chip = AHC_AIC7895;
2301                 ahc->features = AHC_AIC7895_FE;
2302
2303                 /*
2304                  * The BIOS disables the use of MWI transactions
2305                  * since it does not have the MWI bug work around
2306                  * we have.  Disabling MWI reduces performance, so
2307                  * turn it on again.
2308                  */
2309                 command = ahc_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2310                 command |= PCIM_CMD_MWRICEN;
2311                 ahc_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2312                 ahc->bugs |= AHC_PCI_MWI_BUG;
2313         }
2314         /*
2315          * XXX Does CACHETHEN really not work???  What about PCI retry?
2316          * on C level chips.  Need to test, but for now, play it safe.
2317          */
2318         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2319                   |  AHC_CACHETHEN_BUG;
2320
2321 #if 0
2322         uint32_t devconfig;
2323
2324         /*
2325          * Cachesize must also be zero due to stray DAC
2326          * problem when sitting behind some bridges.
2327          */
2328         ahc_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2329         devconfig = ahc_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2330         devconfig |= MRDCEN;
2331         ahc_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2332 #endif
2333         ahc->flags |= AHC_NEWEEPROM_FMT;
2334         ahc->instruction_ram_size = 512;
2335         return (0);
2336 }
2337
2338 static int
2339 ahc_aic7895h_setup(struct ahc_softc *ahc)
2340 {
2341         int error = ahc_aic7895_setup(ahc);
2342
2343         ahc->features |= AHC_HVD;
2344
2345         return error;
2346 }
2347
2348 static int
2349 ahc_aic7896_setup(struct ahc_softc *ahc)
2350 {
2351         ahc_dev_softc_t pci;
2352
2353         pci = ahc->dev_softc;
2354         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2355         ahc->chip = AHC_AIC7896;
2356         ahc->features = AHC_AIC7896_FE;
2357         ahc->flags |= AHC_NEWEEPROM_FMT;
2358         ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2359         ahc->instruction_ram_size = 768;
2360         return (0);
2361 }
2362
2363 static int
2364 ahc_aic7899_setup(struct ahc_softc *ahc)
2365 {
2366         ahc_dev_softc_t pci;
2367
2368         pci = ahc->dev_softc;
2369         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2370         ahc->chip = AHC_AIC7899;
2371         ahc->features = AHC_AIC7899_FE;
2372         ahc->flags |= AHC_NEWEEPROM_FMT;
2373         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2374         ahc->instruction_ram_size = 1024;
2375         return (0);
2376 }
2377
2378 static int
2379 ahc_aha29160C_setup(struct ahc_softc *ahc)
2380 {
2381         int error;
2382
2383         error = ahc_aic7899_setup(ahc);
2384         if (error != 0)
2385                 return (error);
2386         ahc->features |= AHC_REMOVABLE;
2387         return (0);
2388 }
2389
2390 static int
2391 ahc_raid_setup(struct ahc_softc *ahc)
2392 {
2393         printf("RAID functionality unsupported\n");
2394         return (ENXIO);
2395 }
2396
2397 static int
2398 ahc_aha394XX_setup(struct ahc_softc *ahc)
2399 {
2400         ahc_dev_softc_t pci;
2401
2402         pci = ahc->dev_softc;
2403         switch (ahc_get_pci_slot(pci)) {
2404         case AHC_394X_SLOT_CHANNEL_A:
2405                 ahc->channel = 'A';
2406                 break;
2407         case AHC_394X_SLOT_CHANNEL_B:
2408                 ahc->channel = 'B';
2409                 break;
2410         default:
2411                 printf("adapter at unexpected slot %d\n"
2412                        "unable to map to a channel\n",
2413                        ahc_get_pci_slot(pci));
2414                 ahc->channel = 'A';
2415         }
2416         return (0);
2417 }
2418
2419 static int
2420 ahc_aha398XX_setup(struct ahc_softc *ahc)
2421 {
2422         ahc_dev_softc_t pci;
2423
2424         pci = ahc->dev_softc;
2425         switch (ahc_get_pci_slot(pci)) {
2426         case AHC_398X_SLOT_CHANNEL_A:
2427                 ahc->channel = 'A';
2428                 break;
2429         case AHC_398X_SLOT_CHANNEL_B:
2430                 ahc->channel = 'B';
2431                 break;
2432         case AHC_398X_SLOT_CHANNEL_C:
2433                 ahc->channel = 'C';
2434                 break;
2435         default:
2436                 printf("adapter at unexpected slot %d\n"
2437                        "unable to map to a channel\n",
2438                        ahc_get_pci_slot(pci));
2439                 ahc->channel = 'A';
2440                 break;
2441         }
2442         ahc->flags |= AHC_LARGE_SEEPROM;
2443         return (0);
2444 }
2445
2446 static int
2447 ahc_aha494XX_setup(struct ahc_softc *ahc)
2448 {
2449         ahc_dev_softc_t pci;
2450
2451         pci = ahc->dev_softc;
2452         switch (ahc_get_pci_slot(pci)) {
2453         case AHC_494X_SLOT_CHANNEL_A:
2454                 ahc->channel = 'A';
2455                 break;
2456         case AHC_494X_SLOT_CHANNEL_B:
2457                 ahc->channel = 'B';
2458                 break;
2459         case AHC_494X_SLOT_CHANNEL_C:
2460                 ahc->channel = 'C';
2461                 break;
2462         case AHC_494X_SLOT_CHANNEL_D:
2463                 ahc->channel = 'D';
2464                 break;
2465         default:
2466                 printf("adapter at unexpected slot %d\n"
2467                        "unable to map to a channel\n",
2468                        ahc_get_pci_slot(pci));
2469                 ahc->channel = 'A';
2470         }
2471         ahc->flags |= AHC_LARGE_SEEPROM;
2472         return (0);
2473 }